Lesson objective: Apply rounding to approximate a total.
This lesson provides an opportunity for students to apply their knowledge and understanding of rounding to a real-life situation. Students are asked to round three numbers and add the results to get a total approximation of visitors at an amusement park.
Key Concept students will use:
- Rounding to approximate multiple values
Skills students will use:
- Rounding numbers to the thousands
- Adding whole numbers
Students engage in Mathematical Practice 8 (look for and express regularity in repeated reasoning) as they use the structure of the base-ten system to generalize their strategies to round a six digit number to different places.
Key vocabulary:
- approximate
- exact
- round
Special materials needed:
- paper
- pencil